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POLLEN FLORA OF PAKISTAN - XXXIX. PLUMBAGINACEAE

ANJUM PERVEEN AND M. QAISER

Abstract: Pollen morphology of 10 species representing 4 genera of the family Plumbaginaceae from Pakistan have been examined by light and scanning electron microscope. Plumbaginaceae is a eurypalynous family. Pollen grains are generally free, radially symmetrical, isopolar, colpate. Shape of pollen grains are sub-oblate to oblate-spheroidal. Sexine thicker or as thick as nexine. Tectum reticulate or bacculate.
The pollen morphology of the family Plumbaginaceae is significantly helpful at specific level. On the basis of exine ornamentation, 2 distinct pollen types viz., Plumbago zeylanica - type and Limonium stocksii- type are recognized.
 

Department of Botany, University of Karachi, Karachi, Pakistan.